Plus 1 to Shasta. Those are my favorites and are usually easy to find. They are both capable of match grade shooting and very consistent powders. The AA and Hodgdon sites both have great data for the powders and manufacturer data is the best source.
It may not be the least expensive but I have gotten excellent result with W748. Try a pound and if it works for you chase down an 8 Pounders and enjoy. These days I've settled on the powders I like and but either 5 pounders (Alliant) or 8 Pounders. Paul B.